package com.lzb.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.lzb.reggie.common.R;
import com.lzb.reggie.entity.Employee;
import com.lzb.reggie.service.EmployeeService;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        //将密码进行md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //根据用户名查询
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //如果没有查询到则返回登录失败
        if (emp == null) {
            return R.error("登录失败");
        }

        //进行密码比对，如果不一样则返回登录失败
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        //查询员工状态，如果为禁用状态，则返回账号已禁用
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //登录成功，将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    @CacheEvict(value = "employeeCache", allEntries = true)
    public R<String> save(@RequestBody Employee employee) {
        //设置初始密码，使用MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获取当前登录用户的id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    @Cacheable(value = "employeeCache", key = "#p0 + '_' + #p1 + '_' + #p2")
    public R<Page<Employee>> page(int page, int pageSize, String name) {

        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件和排序条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行分页查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    @CacheEvict(value = "employeeCache", allEntries = true)
    public R<String> update(@RequestBody Employee employee) {

//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);

        employeeService.updateById(employee);

        return R.success("修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {

        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("error");
    }
}
